A "long installation procedure"? Only if you build from source. There are binaries for most popular OS distributions and it takes < 5 minutes to download and install them.
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Joshua UlrichApr 18 '11 at 20:00

8

@vonjd: But you could have downloaded, installed, and run your script in less time than it took to write your question and wait for an answer. ;-)
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Joshua UlrichApr 18 '11 at 20:25

7

@Joshua Good point. But in some work environments it can take a lot of effort just to get the permission to install any executable on a machine. And on Windows systems, most installations, even after a subsequent uninstall, litter the machine with detritus that accumulates over time and helps bog everything down, so if you aren't sure you're going to use some software there's incentive not to install it.
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whuber♦Apr 18 '11 at 20:40

6

You can put an entire Windows installation of R (and RStudio for ease of use) on a flash drive. Just copy the R folder. Then you can take it with you.
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kmmApr 19 '11 at 1:48

3

This question appears to be off-topic because it is not about statistics.
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Nick StaunerApr 20 '14 at 19:44

Some of the pastebin services will allow you to enter R code. For example, ideone. Here is a very silly hello world in R. I believe ideone limits you to 15 seconds compute time per run, and no fancy IDE, despite the name.